公开(公告)号：US10673604B2

公开(公告)日：2020-06-02

申请号：US15765712

申请日：2016-10-03

Applicant: CommScope Technologies LLC

Inventor： John M. Hedin ,  Scott B. Stratford

IPC: H04L5/14 ,  H04B7/26 ,  H04W56/00 ,  H04W52/14 ,  H04W52/36 ,  H04W88/08

Abstract: One embodiment is directed to a method (and system and apparatus) for determining timing for a time division duplex (TDD) signal in a distributed antenna system (DAS). The method comprises (and the system and apparatus are configured for) grouping power samples of a downlink portion of the TDD signal into blocks corresponding to a respective time period, comparing power samples of the blocks to a power threshold, assigning the blocks as ON or OFF based on a number of power samples in a respective block that are above the power threshold, identifying a start of a downlink burst in the TDD signal as an ON block preceded by at least a minimum number of consecutive OFF blocks, and controlling at least one component in the DAS based on the start of the downlink burst.

公开(公告)号：USRE47466E1

公开(公告)日：2019-06-25

申请号：US15436534

申请日：2017-02-17

Applicant: CommScope Technologies LLC

Inventor： Larry G. Fischer ,  Jeffrey J. Cannon ,  Steven B. Stuart ,  John M. Hedin

IPC: H04W88/08

Abstract: Systems and methods for IP communication over a distributed antenna system transport are provided. In one embodiment, a method for providing Ethernet connectivity over a distributed antenna system comprises receiving internet protocol (IP) formatted data from an internet protocol device coupled to a remote unit of a distributed antenna system; sampling wireless radio frequency (RF) signals received at the remote unit to produce digitized RF samples; generating a serial data stream for output to a host unit of the distributed antenna system, the serial data stream further comprising a multiple-timeslot communication frame providing a first partition of bandwidth for transporting the digitized RF samples and a second partition of bandwidth for implementing an Ethernet pipe for transporting the IP formatted data.

公开(公告)号：USRE49070E1

公开(公告)日：2022-05-10

申请号：US16525277

申请日：2019-07-29

Applicant: CommScope Technologies LLC

Inventor： James Robert Grenier ,  John M. Hedin

IPC: H04L12/26 ,  H04L43/0864 ,  H04L43/10

Abstract: A method for calculating delay in a distributed antenna system includes sending a ping initiation message from a remote node to a host node in a distributed antenna system. The ping initiation message uniquely identifies a first communication port of the remote node to the host node with a unique identification. The method also includes receiving a ping reply message at the remote node. The ping reply message corresponds to the ping initiation message and also uniquely identifies the first communication port of the remote node with the unique identification. The method also includes determining, at the remote node, whether the ping reply message corresponds to the first communication port of the remote node based on the unique identification. The method also includes, when the ping reply message corresponds to the first communication port of the remote node, calculating the round-trip time delay between sending the ping initiation message and receiving the ping reply message at the remote node.

公开(公告)号：US20210083726A1

公开(公告)日：2021-03-18

申请号：US17107531

申请日：2020-11-30

Applicant: CommScope Technologies LLC

Inventor： Philip M. Wala ,  Dean Zavadsky ,  Jody Forland ,  Jeffrey J. Cannon ,  John M. Hedin

IPC: H04B7/024 ,  H04B7/26 ,  H04W24/00 ,  H03J7/04 ,  H04W16/28 ,  H04W88/08 ,  H01Q1/24

Abstract: A network interface for use within a distributed antenna system, the network interface including circuitry configured to: receive a downlink digital communication signal from an external device external to the distributed antenna system, wherein a reference clock is embedded in the downlink digital communication signal; generate a master reference clock for the distributed antenna system using the reference clock embedded in the downlink digital communication signal; convert the downlink digital communication signal into a downlink signal; communicate the downlink signal toward a remote antenna unit within the distributed antenna system; and wherein the distributed antenna system is configured to distribute the master reference clock to various components of the distributed antenna system to keep the various components of the distributed antenna system locked to a single clock, wherein the various components of the distributed antenna system include the remote antenna unit.

公开(公告)号：US10855338B2

公开(公告)日：2020-12-01

申请号：US16030642

申请日：2018-07-09

Applicant: CommScope Technologies LLC

Inventor： Philip M. Wala ,  Dean Zavadsky ,  Jody Forland ,  Jeffrey J. Cannon ,  John M. Hedin

IPC: H04B7/024 ,  H04B7/26 ,  H03J7/04 ,  H04W16/28 ,  H01Q1/24 ,  H04W24/00 ,  H04W88/08 ,  H04W56/00 ,  H04B1/40

Abstract: A distributed antenna system (DAS) includes: a base station network interface; and a remote antenna unit communicatively coupled to the first base station interface, the remote antenna unit including an antenna. The remote antenna unit configured to: receive a radio frequency band signal from a subscriber unit; convert the radio frequency band signal into a data stream; and communicate the data stream with the first base station network interface. The first base station network interface is configured to: convert the data stream or a signal derived from the data stream into a communication signal, wherein a mater reference clock is distributed between various components of the DAS to keep the various components of the DAS locked to a single clock; and communicate the communication signal and the master reference clock to an external device, the external device configured to lock its clock to the master reference clock.

公开(公告)号：US20180323831A1

公开(公告)日：2018-11-08

申请号：US16030642

申请日：2018-07-09

Applicant: CommScope Technologies LLC

Inventor： Philip M. Wala ,  Dean Zavadsky ,  Jody Forland ,  Jeffrey J. Cannon ,  John M. Hedin

IPC: H04B7/024 ,  H04W88/08 ,  H04W16/28 ,  H03J7/04 ,  H04W24/00 ,  H01Q1/24 ,  H04B7/26 ,  H04B1/40 ,  H04W56/00

CPC classification number: H04B7/024 ,  H01Q1/246 ,  H03J7/04 ,  H04B1/40 ,  H04B7/26 ,  H04W16/28 ,  H04W24/00 ,  H04W56/00 ,  H04W88/08

Abstract: A distributed antenna system (DAS) includes: a base station network interface; and a remote antenna unit communicatively coupled to the first base station interface, the remote antenna unit including an antenna. The remote antenna unit configured to: receive a radio frequency band signal from a subscriber unit; convert the radio frequency band signal into a data stream; and communicate the data stream with the first base station network interface. The first base station network interface is configured to: convert the data stream or a signal derived from the data stream into a communication signal, wherein a mater reference clock is distributed between various components of the DAS to keep the various components of the DAS locked to a single clock; and communicate the communication signal and the master reference clock to an external device, the external device configured to lock its clock to the master reference clock.

公开(公告)号：US10020850B2

公开(公告)日：2018-07-10

申请号：US14187115

申请日：2014-02-21

Applicant: CommScope Technologies LLC

Inventor： Philip M. Wala ,  Dean Zavadsky ,  Jody Forland ,  Jeffrey J. Cannon ,  John M. Hedin

IPC: H04B1/06 ,  H04B7/00 ,  H04B15/00 ,  H04M1/00 ,  G01R31/08 ,  G06F11/00 ,  G08C15/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26 ,  H04W4/00 ,  H04B7/02 ,  H04L1/02 ,  H04L7/00 ,  H04B7/024 ,  H04B7/26 ,  H04W24/00 ,  H03J7/04 ,  H04W16/28 ,  H04W88/08 ,  H01Q1/24 ,  H04W56/00 ,  H04B1/40

CPC classification number: H04B7/024 ,  H01Q1/246 ,  H03J7/04 ,  H04B1/40 ,  H04B7/26 ,  H04W16/28 ,  H04W24/00 ,  H04W56/00 ,  H04W88/08

Abstract: A distributed antenna system (DAS) includes: first base station network interface unit that receives first downlink signals from first external device and converts them into first downlink data stream; second base station network interface unit that receives second downlink signals from second external device and them into second downlink data stream; first remote antenna unit communicatively coupled to first base station network interface unit that receives at least one of first downlink data stream and first downlink signal derived from first downlink data stream. First remote antenna unit has first radio frequency converter configured to convert at least one of first downlink data stream and first downlink signal derived from first downlink data stream into first radio frequency band signal and first radio frequency antenna that transmits first radio frequency band signal to first subscriber unit. DAS is configured to transmit a master reference clock to the first external device.

公开(公告)号：US11329701B2

公开(公告)日：2022-05-10

申请号：US17107531

申请日：2020-11-30

Applicant: CommScope Technologies LLC

Inventor： Philip M. Wala ,  Dean Zavadsky ,  Jody Forland ,  Jeffrey J. Cannon ,  John M. Hedin

IPC: H04B7/024 ,  H04B7/26 ,  H04W24/00 ,  H03J7/04 ,  H04W16/28 ,  H04W88/08 ,  H01Q1/24 ,  H04W56/00 ,  H04B1/40

Abstract: A network interface for use within a distributed antenna system, the network interface including circuitry configured to: receive a downlink digital communication signal from an external device external to the distributed antenna system, wherein a reference clock is embedded in the downlink digital communication signal; generate a master reference clock for the distributed antenna system using the reference clock embedded in the downlink digital communication signal; convert the downlink digital communication signal into a downlink signal; communicate the downlink signal toward a remote antenna unit within the distributed antenna system; and wherein the distributed antenna system is configured to distribute the master reference clock to various components of the distributed antenna system to keep the various components of the distributed antenna system locked to a single clock, wherein the various components of the distributed antenna system include the remote antenna unit.

公开(公告)号：USRE47545E1

公开(公告)日：2019-07-30

申请号：US15173203

申请日：2016-06-03

Applicant: CommScope Technologies LLC

Inventor： James Robert Grenier ,  John M. Hedin

IPC: H04L12/26

Abstract: A method for calculating delay in a distributed antenna system includes sending a ping initiation message from a remote node to a host node in a distributed antenna system. The ping initiation message uniquely identifies a first communication port of the remote node to the host node with a unique identification. The method also includes receiving a ping reply message at the remote node. The ping reply message corresponds to the ping initiation message and also uniquely identifies the first communication port of the remote node with the unique identification. The method also includes determining, at the remote node, whether the ping reply message corresponds to the first communication port of the remote node based on the unique identification. The method also includes, when the ping reply message corresponds to the first communication port of the remote node, calculating the round-trip time delay between sending the ping initiation message and receiving the ping reply message at the remote node.